Molded-flange insole



Aug. 9 1927.

A. H. PRENZEL MOLDED FLANGE INSOLE Filed July 9, 1925 WITNESSES INVENTOR mm/31 g? u ATTORNEYS the stapling anvil of a lasting machine.

Patented Aug. 9,1927.

MOLDED-FLANGE INSOLE.

' Application filed July 9,

This invention relates to improvements in shoes, and it consists of. the construction and process of manufacture of a particular shoe sole. I V

' 5 An object of the invention is to produce an upstanding flange substantially at the eriphery of an insole by a molding or forming operation as appears more fully below,' for the purpose of making room for Other objects and advantages appear in the following specification, reference being bad to the accompanying drawing, in .which g l g Figure 1 is a perspective, view of a peripherally channeled and stamped insole.

's a cross section on the line Figure 2 1 22 of Figure 1. v

Figure 3 is a perspective viewof the ine sole showmg the channel flange after the insole has been subjected to one of the steps of the improved process. I

Figure 4 is a cross section on the line 4-4 of Figure 3 illustrating the appearance of the channel flange.

Figure 5 is a detail sectional view showing how the molded channel flange fits upon the anvil of a lasting machine. 1

Figure 6 is a detail sectional view illustrating a'step in the sewing operation.

In Figure 1 theinsole 1 is peripherally channeled as at 2 to provide a flange 3. The adjacent edgeof the sole is also beveled as shown. This particular insole is employed in'making the welt and one of'the steps in the manufacture of this type of shoe is to temporarily-fasten an upprstructure to the .flan e 3. V Y

pon consideration of Figure 2 it is readily i 40 seen that theflange 3 makes intimate contact with the body of the insole 1. The loose or feather edge of the flange lies so close to-the bottom of the channel 2 that considerable difliculty is experienced in fitting the flange upon the anvil of-the lasting machine preparatory to getting the parts into'position forthe driving of staples, or other means by which the upper structure is temporarily aflixed to the flange. It is a purpose of the invention to so 1925. Serial No. 42,544.

treat, mold or form" the channel flange that the act of fitting the shoe to the anvil] of the lasting machine will involve no The invention rein the process involved but culty :or problem at all. sides not only also in the product resulting therefrom.

Figures 3 and 4E illustrate'the shape'of the flange 3 after it has been treated. The flangg is caused to stand upin relationship to the insole 1 and curves in respectto the insole to provide a concavity 4. The insole ,is

moistened preparatory to the step of treating, forming or molding the flange 3 so that it readily yields to the operation. Upondrymg, the flange 3 retains the it by the molding operation, the channel 2 and concavity 4 providing an ample pocket insole '1 in position upon the anvil 5, preparatory to the driving of the staple 7 The staple is driven through the flange as well as the lining 8 and leather 9 of the shoe upper structure which is intended to be held in place'temporarily. The staplingloperashape given to for the reception of theanvilb' (Fig. 5) of a lasting machine. The feather edge '6 of '75 r Figure 5 ,illustratesthe flange 3 of the tion occurs prior to the inseamingoperation illustrated in Figure 6. The needle -10' inserts the inseam through, a welt strip 11, the shoe upper structure and the base of the flange 3.

The curved, curled or .concaved channel flange 6 may be given its shape by any means appropriate for the purpose, and a part of the invention therefore resides in the article itself. The insole is formed from a piece of leather by stamping, channeling, moistening and treating the resulting flange 3, and an-..

other part of the invention thereforepresides 1n the particular step of molding the channelflange into the particular shape described.

I claim:' I A shoe sole having a channel out Home f f 'dplac e int erio rl y of oneflside surface toward j jfthe-edge producing a-feather edge flange,

i ,said flange being in upstanding relationship to the sole and being cross sectionally curved s0'fthat the feather edge is "spaced above the j adjacent said surface of the sole andisdi rejctedtoward theeinterionof theso le and arched over the Channel; the concaved interior of 'the flange ar d the bottom of the 7 channel providing an ample peripheral 10 pocket accessib ie from the interior of the sole.

ADAM H. PR NZEL, 

